JSTests/ChakraCore/test/fieldopts/fieldcopyprop_deletestrict.js

//-------------------------------------------------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
//-------------------------------------------------------------------------------------------------------

// Test to make sure field copy prop can deal with delete
"use strict";
function f() {
    var x = new Object();
    x.y = 1;
    delete x.y;
    if (x.y === undefined)
    {
        WScript.Echo("Pass");
    }
    return x;
}

function g(o)
{
    delete o.y;
}

g(f());